Ball valve develops from cock. its starting and closing parts are balls. It is opened and closed by rotating the ball 90°along the stem axis. Ball valve is used to stop, distribute and change the moving direction of media. V-shaped ball valve has good

Gate valve: its closing part (wedge disc) moves along the passage axis vertically. It is used as a fully-open or fully-closed stop medium in piping. It is generally not used to adjust flow. Characteristics of gate valve: flow resistance is small; open

Globe valve: its closing parts (disc) moves along the midline of the seat. According to this mobile form of disc, seat inlet varies directly with disc stroke. The starting and closing strokes of this vale are shorter. Globe valve is especially suitabl

Check valve is an automatic valve opened and closed by flow force of the medium in the piping. Check valve is used in piping system. It is mainly used to prevent back flow of media, reversal of pump and its driving motor,and discharge of media in the